理想集成运算放大器应具备的条件中,以下()是正确的。
A.闭环放大倍数不无穷大
B.输出电阻为无穷大
C.输入电阻趋近于无穷大
D.共模抑制比为零
参考答案:B
Which classification of hedge funds is least likely to use a short position in stock as a part of its strategy()
A. market-neutral funds.
B. emerging-market funds.
C. distressed securities funds.
长距离跑主要是什么形式供能?()
A、无氧供能
B、有氧供能
C、无氧供能和有氧供能
D、其它方式供能